G101041 Effects of Friction Bearing Type on Response Characteristic of Base Isolation System for Equipment

Abstract

In order to know effects of friction bearing type on response characteristics of base isolation system,characteristics of base isolation system composed of only new friction bearing are investigated by excitation experiment,and are compared with the existing system.The friction bearing with the ball embedded in a cylindrical sponge can control damping ratio without change of natural frequency.Compared to peak acceleration amplitude and RMS between the existing and the new system,the new system in case 4 indicates good reduction.From a spectral point of view,thesystem in case 4 shows good reduction at the frequency bands over 1Hz.